I am an OR nurse and have been for 15 years. You may have long cases, like neuro-back surgeries, but during the case you will have to chart, look up your next patient, prepare for your next case, chart the implants, be anesthesia's third arm, obtain sterile equipment and supplied and open them, you may have to help clean the room in between to get it ready for the next case, push in the microscope, pull out the microscope, call x-ray...... I relish a boring day because it is usually few and far between.